
public class java_3_1 {
	public static void main(String[] args) {
		int ken=10, yoo=-20, boo;
		boo=-yoo;
		System.out.println("***** result *****");
		System.out.println("ken=" + ken + "," +"yoo=" + yoo + "," +"boo=" + boo);
		System.out.println("++ken=" + (++ken) + ", ken=" + ken);
		System.out.println("ken++=" + (ken++) + ", ken=" + ken);
		System.out.println("--boo=" + (--boo) + ", boo=" + boo);
		System.out.println("boo--=" + (boo--) + ", boo=" + boo);
		}
}
